How to centre text using drawInRect...

viewWithTextIn.m

//Create the rect you would like your text to be inside of...
CGRect maxTextRect = CGRectMake(0, 0, 200, 60);

//Create the attributed string
NSAttributedString *theString = //... do all the setup.

//Find the rect that the string will draw into **inside the maxTextRect**
CGRect actualRect = [theString boundingRectWithSize:maxTextRect.size options:NSStringDrawingUsesLineFragmentOrigin context:nil];

//Offset the actual rect inside the maxTextRect
// this will center vertically and horizontally
CGRect drawRect = CGRectMake(CGRectGetMinX(maxTextRect) + ((CGRectGetWidth(maxTextRect) - CGRectGetWidth(actualRect)) * 0.5)
                             , CGRectGetMinY(maxTextRect) + ((CGRectGetHeight(maxTextRect) - CGRectGetHeight(actualRect)) * 0.5)
                             , CGRectGetWidth(actualRect)
                             , CGRectGetHeight(actualRect));
                               
//Now draw in that new rect...
[theString drawWithRect:drawRect
                options:NSStringDrawingUsesLineFragmentOrigin
                context:nil];